Giant bell jellies swim in a large aquarium on display during a preview for The Jellies Experience exhibition at the Monterey Bay Aquarium in Monterey, California. The new $3.5m exhibition features 16 jellyfish species from around the world in a collection of live and interactive display

A fisherman uses a lantern while dip netting for elvers on a river in southern Maine. Elvers are young, translucent eels that are born in the Sargasso Sea and swim to freshwater lakes and ponds where they grow to adults before returning to the sea